<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>033-赋值.html</title>
</head>
<body>
	
</body>
<script>
	var a = 123;
	// a += 2;
	// a =a + 2;
	// a-=2; 
	// a = a - 2;
	// a * = 2
	// a /=2;
	a %= 4;
	// a = a%4;
	console.log(a);
</script>
</html>